Using COM dll in dot net -- HELP

Question

I have a COM dll which I want to include in a DotNet Application. i gave the reference to it from the local path. It generates a assembly with name such as Interop.somedll.dll and the application runs fine on local. When I have to upload it to the server do I need to uploda the COM dll and the assembly generted (Interop.somedll.dll) in the bin folder of the application ? That COM dll is though installed on the server already. Where does the application when run from server will look for the reference?